Where does “undia” come from?

undia (Old High German) comes from Proto-Germanic unþī, from Proto-Indo-European unt-.

Ancestry of “undia”, step by step

StepLanguageWordMeaning
1Proto-Germanicunþīwave
2Proto-Indo-Europeanunt-—
Every word from Proto-Indo-European unt- →Every word from Proto-Germanic unþī →